Modular bookshelf



FIG. 1 is a front perspective view of an embodiment of a modularbookshelf system showing our design;

FIG. 2 is a front orthographic view thereof;

FIG. 3 is a rear orthographic view thereof;

FIG. 4 is a top orthographic view thereof;

FIG. 5 is a bottom orthographic view thereof;

FIG. 6 is a left side orthographic view thereof; and,

FIG. 7 is a right side orthographic view thereof.

CLAIM The ornamental design for a modular bookshelf, as shown anddescribed.